Power grid control method

A power grid and coordinated control technology, which is applied in power network operating system integration, AC network voltage adjustment, information technology support systems, etc., and can solve problems such as low execution efficiency

Inactive Publication Date: 2016-08-03
宜昌昌耀电力成套设备有限公司
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  • Claims
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Problems solved by technology

However, this method has the following disadvantages: the frequency or the amount of low-voltage reduction determines the load capacity P to be cut off is not necessarily accurate P, and the load capacity to be cut off may deviate from a certain range of P in actual cut-off; on the other hand, its basis The importance of the load is removed in sequence, and it may take multiple rounds to determine the final removed load, and the execution efficiency is relatively low

Method used

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Embodiment approach

[0017] see figure 1 , an implementation of the power grid load shedding linkage coordination control method of the present invention includes the following steps: a) Sorting the grid loads into two tables, wherein the first table is sorted according to the grid load capacity; the second table is sorted according to the grid load capacity The importance of each grid is sorted; b) Divide the grid loads in the first table into N groups according to their capacity, and the load capacity of each grid in the Ni-th group is higher than that of each grid load in the Ni-1 group; when grouping According to the minimum load Pmin and the highest load Pmax of the grid load, the grid load in the first table is divided into N groups, where the grid load in the Ni group is Pmin+(Ni-1)×(Pmax-Pmin) / N and Pmin+Ni×( Between Pmax-Pmin) / N; c) Sort the grid load capacity of each group in the N group in the first table; d) Starting from the Nth group with the largest grid load, for the highest grid l...

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Abstract

The invention relates to a power grid load shedding linkage coordination control method. The power grid load shedding linkage coordination control method comprises the steps: sorting according to the power grid loading condition and the power grid load degree; and performing a test on shedding the power grid load by means of sorting so as to determine the most suitable power grid load shedding mode, wherein putting an initial point for load shedding in an intermediate group of the power grid load capacity, thus being able to quickly determine the most suitable shedding capacity. The power grid load shedding linkage coordination control method fully plays the role of a low frequency and low voltage load shedding device and constructs a power grid third channel safety defense line.

Description

technical field [0001] The invention relates to a power grid control method, in particular to a low-frequency voltage load shedding linkage coordination control method. Background technique [0002] In the prior art, the power grid includes transmission lines, substations, large-scale generating sets and several regional power grids. The regional power grids are connected to the substations. The transmission lines connect each substation into a power transmission network. substation. In this way, the large-scale generating set generates electric energy for the regional grid in its area, and the remaining electric energy is transmitted to other regional grids through the transmission line. [0003] In the grid system, when the load increases or decreases, the power system voltage and power system frequency change, at this time, the power system voltage and power system frequency can be adjusted by increasing or decreasing the output power of the generator to make it fall in...

Claims

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Application Information

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IPC IPC(8): H02J3/14
CPCY02B70/3225Y04S20/222H02J3/14
Inventor 韩少茹
Owner 宜昌昌耀电力成套设备有限公司
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